US Patent No: 5,614,319
Number of patents in Portfolio can not be more than 2000
Insulating composition, insulated plenum cable and methods for making same
Stats
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Mar 25, 1997
Issued date -
May 4, 1995
filing date -
08/435,870
serial no -
Expired
status
Importance
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Abstract
There is disclosed an insulating composition comprising a mixture of a polyolefin, such as polyethylene or polypropylene, and a partially fluorinated copolymer such as ethylene-chlorotrifluoroethylene (ECTFE) or ethylene-trifluoroethylene (ETFE) in an amount from about 3.0% to about 50% by weight polyolefin. Such mixture may be used as either a solid or foamed insulation over a metallic conductor in a plenum-type communications cable. Such an insulation has been found to have improved mechanical and electrical properties over insulations consisting of 100% ECTFE or ETFE. Specifically, the insulation exhibits improved elongation performance and lower dielectric constant and dissipation factor values. These insulated wires may be used in the transmission of electronic signals, such as voice, data or video, and possess unique properties in electrical, fire safety and cost performance. The insulated cable is made by extruding a mixture of the polyolefin and partially fluorinated copolymer, such as ETFE or ECTFE, onto a metal conductor wire. Additional flame retardants, compatabilizing agents and processing aids may also be added to the mixture. If a foamed insulation is desired, a suitable nucleator and blowing agent may be added.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,702,836 Porous fluorine resin membrane and process for preparing the same | 41 | 1986 | |
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